Threading device



Oct. 5, 1943. s o z 2,331,246

THREADING DEVICE Filed Feb. 21, 1942 2 Sheets-Sheet 1 Jazz? 0 o JC -1. w

WITNESSES: INVENTOR Oct. 5, 1943. s oL'rz 2,331,246

THREADING DEVICE Filed Feb. 21, 1942 2 She ets-Sheet 2 INVENTOR ATTORNE WITNESSES:

-x:Fig. 2 is; asideelevationwiew of the device Patented Oct. 5, 1943 :1;

Vania.

7 My invention relatesj generally} 'tothreading devices more particularly; [to devices for threading magnetic material between-1work devices such as the adjacent rollstands of a steel 1,

'strip'rolling mill; I i

A In the operation"or steeKstrip rolling mills havinga plurality of'roll stands. considerable time and effort ise'zkpend'ed in "conveying and guiding (o1.Js -]44)' g r V m m er3qa1ida2fto thereby cause the belt "10 to move, around andac'rossfthe uppersurface of the-frame member-$4.5, '6 and?! and their associated magnets 8. Anidling'roller 34 isdisposed to bear against the ,beltlfl'and is mounted ferrotation in a yoke 'me'rnber3'6' which, in turn, is

mountedfor slidable movement along thearr'ris thestrip irom'each roll stand to the next adjacent 7 roll stand. I-Ieretofore; this operation has had to be'performed manually 'bythe operato'r who grasps'the end oftlie strip as it emergesfrom each roll stand and guides it into the next roll stand. It

I I An" object of my invention,- therefore, is to provide a threading device I for magnetic strip 7 material which,shall tunction tmthread the end 7 of a length of the material 'intofa workdevice automatically as it is deliveredfrom another twork device, which shall thereby;increasefithe :speed of functioning and the output of the work devices, and-which shall be inexpensive to menu fracture, instalLcper'at'eand maintain.

These: and other objectsfand advantages of the invention will be. apparent from the following de- Etailed. description taken in {connection with 1 the "accompanying drawings,. in.whicht r Figure 1 is .aperspectiviewiew ofthe prefierred se'cureda" uprighmhannel members'66f and. 1

of the to the oke -36 and toe yoke memb' er 44"Whi0h issuitamysecured-t0 'the member l4 to thereby bias' th idling roller 34 against the-belt l0. 'A'-'pa1 I to engage cooperating guide members 150jand "52 straight line" motion of'theimember l4 when" at:- tuated by the rod 16;" T'heguide member 46 is rsecuredjooross braces anatt which, in turn, I I arescured to upright channel membersia and 2O 6(l an'd the {guide member 48! is likewise secured to' -c'rossmeinbers 62'. and 64 which, in turn, are

'rnecii' nname bers 58; so," 66 and$68 are 'se- 1 embodimentof, my invention-havingcertain parts of the devicebroken away-to ;show tha con- ;structionalfeaturesof the-,device,-;and v w in retractedpos'ition and in broken. lines representing head with respect'to themillrolls; a

,In, practicing my invention, :I provide frame members 4, 5, 6 and 'T on which are mounted a plurality of magnets 8 and around which a belt or web member II! is driven by amotor I? which is mountedupon the frame member, ,4. The

curedin any suitable manner" to a base member ,flfltoi 'whichthe cylinder I8 is also secured. The channel member 66 is curved at its upper end and serves as'a guide for a roller 12 which is ro-* tatably mounted upon an arm 14 'wh-icn'ini-turn',

is-suitably secu r'dtothe frame member 1. A

'similarrollerfllifand mounting arm 18 are secured tothe frame member 6 and cooperate'with a curved upp'erap'ortionPof the upright member 60 which has been cut away 1 inthe drawings for ingthe'normal: operative position of the thread- I:

.frame, members 4, 5, 6 andfl arehingedlyifnounted on a, supporting U-shaped memberalzf and may be actuated between thenormal operatingposi tion shown in Fig. land .in broken lines in Eig. "2,"and the retracted position shown in:F 'ig. '2.by a piston rod l6 which isactuated bya .piston fin an air cylinder 18 Valve Inembe'rsEZOjan'd .22 maybe simultaneously actuated'by an operat- -,ing rod 24 to actuate the piston rod inthe dee sired direction.

Considering the. invention moreinjdetailfroller' members 26 and ,28 extend between andare mounted for rotation upon the framemembersl and, Sand 6 and 1, respectively; The roller mem- 7 her 26is drivenby the motor l2 through gear "convenience 'ofillustration of the other parts "of the mechanism. A roller member similar to roller members I2 and :16 is also mounted upon a member 88 WhichQin turn; issecured tothe'frame ;me mbe'r 4-to provide guidirig relation betweenthe frame 'memb'er-4 and 'the-uprightim'emberi 58. Similar guide elements, 'not shown in the'draw- "ingsg are provided to secure" guiding relation be. tween theiram'e mem 'n'el member 68. a I

When the mechanism-is in operative position er 5 and the upright Johanand it is desired' to retract it to'th'e position shown in Fig. 2. the piston rod I6 may be moved I downwardly and. the rollers 12' and'16 associated with the'frame members I and 6 and similar;

rollers associated with the frame members 4. and 5 will followtheir'guide' channels 66, 66, stand 68, respectively. Thefr'ame members 4,"'5,':-65and..'

I will be m'ade to fold'abouttheir pivotal mounting pointson the arms of the U-shaped member;

I 4 and will be drawn downwardbeneath therfl r -line in the position shown in Fig. 2.

snspea me bei M in slots 13a and" 40, 7 Spring membersill and 42 are secured df g'uidemembers 4 6and as is disposed magnets 8 and the belt Ill to the position shown in Fig. 1, and shown in broken lines in Fig. 2. At the same time, the magnets 8 and themotor l2 may be energized to thereby move the belt across the upper surface of the magnets-in the direction from the roll stand 82 toward the roll stand 84. The end of the strip emerging from the roll stand 82 will be attracted by the magnets and will thereby be held against the belt it! as it moves toward the roll stand 84. As the end of the strip leaves the end of the magnets mounted between the frame members 4 and 5, it will no longer be attracted to the belt l and will extend between and be engaged by the reducing rolls of the roll stand 84. 7

After the striphas been thus threaded from the roll stand 82 to the roll stand 84, the magnets 8 and the motor 12 may be energized and the valve rod 24 may be moved to the position shown in Fig. 2 to so actuate the valves 20 and 22 as to permit the air in the lower portion of the cylinder l8 to exhaust and to cause air pressure :to be applied to the upper end of the cylinder I 8 to thus cause the piston rod IE to pull the mechanism down into the position shown in'Fig. 2 be,- low the floor line and out of the way of operators engaged in the operation of the mill. 7 It is to be understood that it is not necessary that the mechanism be retracted after every threading operation. It is contemplated thatthe mill. It is also .to be understood that the device may be used to attract the trailing end of the strip while it is passing between roll stands t thereby prevent whipping of the loose end of the strip.

Thus it will be seen that I have provided a threading device for strip material which shall function to thread the end of a length of a material into a work device automatically-as it is delivered from another work device which shall thereby increase the speed of functioning and the output of the work devices, and which shall be inexpensive to manufacture, install, operate and maintain.

In compliancewith the requirements of the patent statutes, I have shown and described herein a preferred embodiment of my invention. It is to be understood, however, that the invention is not limited to the precise construction shown and described but is capable of modification by one skilled in the art, the embodiment herein shown being merely illustrative of the principles formed in two parts with the adjacent: endsqof the parts hinged to the U-shaped support, an endless belt mounted for movement over the surface of said magnetized device from the one work device to the other, means for actuating the belt, and means for actuating the U-shaped support to an operating position with respect to the work devices such that the end of the length of mag- -.netic'material as it is delivered from the one work device will engage and adhere to the moving belt and will thus be moved by the belt to i the other work device and to a retracted posi- -.tion where the magnetized device and belt are removed from the region of the pass line of the length of material as it moves from one work device to the other.

2. A device for threading a length of magnetic material from one work device from which it is being delivered to another work device to which mm said table. structure in an extended operating position with respect to the pass line of the length of material between the work devices it is being fed comprising, a collapsible table structure including a plurality of magnetized devices presenting a relatively flat surface of such dimensions as to extend substantially from the one work device to the other work device, an

endless belt mounted on the table structure for and to collapse said table structure and retract it to a non-operating position removed from the region of the pass line, and fluid-responsive actuating means for the movable support.

'3. In a device for threading a length of magnetic material from one work device from which it is being delivered to another work device to device in the direction from the one work device toward the other work device, whereby the length of material will adhere to and be moved by the belt from the one work device to the other, and means supporting the magnetized device intermediate its ends operable to actuate said belt and said magnetized device between an operative position with respect to the work devices and the length of material and a retracted position out of the area of the pass line of the material.

4. In a device for threading a steel strip from one roll stand of a strip rolling mill to the next adjacent roll stand, a magnetized device so disposed'with' respect to the strip as it is delivered from the one roll stand as to attract the strip, a movable belt disposed between the magnetized device and the strip, means for moving said belt between the one and the next adjacent roll stands, movable support means for said magnetized device and belt, said movable support means .being operable to hold said magnetized device and be1t'.in an operative position with respect to the roll stands and to actuate said magnetized device and belt to an inoperative retracted position removed from the region of the pass line of 2,331,24e c I g V ends, means mounting the ends which are' op-;

the strip between the roll-stands to thereby leave I ,j the space between the roll stands free while the -;-threading function is notbeing performedbv the threading device, and fluid pressure, responsive means for actuating themovable support means.

- g 5. In a threading 'device'for threading a length of material from oneworkflevice fromwhich it v isbeing delivered to anotherjwork work device to which itisbeing fed, a pair of members hav-x ing substantially plane surfaces anddisposed with one of thefends of each adjacentan-endofifthe 1 other, hinge means securing the memberstm gether at their adjacent ends, meansjmountingthe ends which are oppositethehinged ends of I a the members each adjacent one of the work devices, a movable belt,means for'causing the belt .to move over the surface of the members in the direction'from the one work device to the'other,

'meansfor causing the length ofmaterial to adc here to the belt asit passes overthemembers} 1 i and means for'causing the members'to befolded about their hinged connection and to be retractadjacent an end of the other, hinge means secur jfi I adjacent ends,.means mounting the ends joifithe' adjacent one-,ofth'e'roll stands, a movablebeltf";

ed from the area of the pass line of the length of materialas it passes between the work devices. :6, In a threading device for threading-a length 'orjrnagnetic material from onework devicefrom Y which it is being delivered to another-'workgdevice f to which it is being fed,ia pair of'rnagnetized' members having substantially plane surfaces and disposed with one ofthe end snot each adjacent an end of the other; hinge means securing the' magnetized, memberstogether at their adjacent the surface of the members in the direction from "causing the magnetizedmembers to be folded 10' I one roll'stand of a strip rolling mill to the next; succeeding adjacent; roll stand,- a pair of (magmembers inthe'directionfromthe one roll stand} r to the next succeeding roll stan d, and means for; 1 4 causing the magnetized members to 'be .foldedy about their hinged connection and withdrawn posite'the hinged ends ofthe magnetic members, Y I

each adjacent one, of the work devices, a-movable} I a belt, means for causing the belt to move over:

thefone work' device tothe other, and means for about their hinged connection and withdrawn from the area of the pass line oi the length/of, v 1 magnetic material as it passesbetween' tne ork: devicesp c I a i =1 7, In a device for threading asteel strip ,from 1 netized' members having substantiallyt plane s n a, facesand disposed with one of theen'dsl'of each ing the magnetized members together at their c members which'are opposite the hingedends-each means formoving thebelt over the surfaceofthe to thenext succeeding roll-stand sothattli end of thesteel strip, when it emerges from one," roll stand, will'adhere to the belt and be'guided from the area of the pass'linei of between the roll stands. 

